Latest Seismology Stories
Geophysicist Andrea Donnellan of NASA's Jet Propulsion Laboratory, Pasadena, Calif., reflects on the Northridge earthquake, what we've learned about earthquakes since then, our state of preparedness for the next "big one" and what lies ahead for earthquake studies at NASA.
Four years after the January 2010 earthquake, 145,000 people still remain homeless in Haiti. A cheap and simple technology to repair earthquake damaged buildings – developed at the University of Sheffield – could help to reduce these delays by quickly making buildings safe and habitable.
California felt 110 earthquakes during 2013 in the 3.0-6.0 magnitude range.
Natural disasters were rampant in 2013, causing wide spread damage, chaos and impacted millions of people. In a report from CBC News, German insurance company Munich Re, said that there were about 880 major natural disasters around the world in 2013.
Last year's gigantic landslide at a Utah copper mine probably was the biggest nonvolcanic slide in North America's modern history, and included two rock avalanches that happened 90 minutes apart and surprisingly triggered 16 small earthquakes
New research, published in Seismological Research Letters, suggests that the 32-mile segment of the fault northeast of the 2013 Lushan rupture is the place to watch for the next major earthquake in the region.
A new study, published in Seismological Research Letters, reveals that rare earthquake lights are more likely to occur on or near rift environments. These environments are where subvertical faults allow stress-induced electrical currents to flow rapidly to the surface.
Almost one quarter of all earthquakes start in the lithosphere, a slice of the Earth about 31 miles below the surface. Scientists have now revealed the discovery of a mechanism that helps deep rumblings in the lithosphere spread into larger quakes.
The long standing mystery of what drives a particular type of earthquake that occurs deep within the Earth and accounts for one in four quakes worldwide might have been solved by a team led by Stanford researchers.
Seismology is the scientific study of earthquakes and the spread of elastic waves through the Earth or through other planet-like bodies. The field includes studies of earthquake effects, such as tsunamis in addition to diverse seismic sources such as tectonic, volcanic, oceanic, atmospheric, and artificial processes. A related field that utilizes geology to infer information regarding past earthquakes is paleoseismology. A recording of earth motion as a function of time is a seismogram. A...
The Richter scale assigns a single number to quantify the amount of seismic energy released by an earthquake. The scale uses a base-10 logarithm by calculating the logarithm of the combined horizontal amplitude of the largest displacement from zero on a particular type of seismometer. A earthquake measuring 5.0 on the Richter scale has a shaking amplitude 10 times larger than one that measures 4.0. The moment magnitude, calibrated to give generally similar value for medium-sized...
The Seismometer is an instrument designed to measure the motions of the ground. This includes seismic waves generated by earthquakes, nuclear explosions, and other seismic sources. Records of these activities allow seismologists to map the interior of the Earth, and locate and measure the size of the different sources. There are also seismographs, which is sometimes used in place of the word seismometer. However, a seismograph is the older instrument in which the measuring and recording...
- To swell, as grain or wood with water.